/Engine/Source/Runtime/Experimental/Chaos/Public/Chaos/GeometryParticles.h
Assumes the weak particle handle has been initialized so SharedData must exist.
[TGeometryParticleHandle](API\Runtime\Chaos\Chaos\TGeometryParticleHandle)< [FReal](API\Runtime\ChaosCore\Chaos\FReal), 3 > * GetHandleUnsafe() const